Safety device for hoisting cages



June 7, 1932.

H. H. M DANIEL ET AL SAFETY DEVICE FOR HOISTING CAGES Filed April 22. 1951 '1' Howard 1%. Mc'flazzz'e/ gammy; H- Mafia nz'ef Patented June 7, 1932 UNITED STATES PATENT OFFICE HOWARD HAYES MCDANIEL AND CHARLES HANSON MCDANIEIJ, BEAUMONT, TEXAS SAFETY DEVICE FOR HOI STING GAGEE Application filed April 22,

This invention relates to a warning indicator, particularly adapted for use in connection with elevators used during the construction of buildings wherein the elevator shaft is open.

The prime object is to provide apparatus in connection with a hoisting cage that will serve not only as a physical and audible signal, but will actually strike a person without injury who is in danger from the descending cage. It is customary in building construction to erect a tower, open on all sides,

'in which a hoisting cage is mounted for the purpose of raising and lowering material. Such a structure is devoid of the usual safety devices present in passenger elevators, and a great many lives have been lost due to workmen extending their bodies into the shaft either to locate the hoist or to communicate with other workmen. The danger is primarily from a descending cage as an ascending hoist is usually readily seen.

In our invention the workmen will hear the descending hoist, and if this signal is disregarded, will be able to see that the hoist is descending long before he is in danger, and lastly will actually be subjected to physical contact without injury if he is in danger in ample time to withdraw.

Other objects of our invention will be disclosed in the specification and claims forming a part of this application.

In the drawing:

Figure l is a side elevation representing a shaft in which the hoist operates;

Figure 2 is a side elevation of the hoist and signalling apparatus extending therefrom taken at right angles to Figure 1;

Figure 3 is a detailed cross section of one of the links taken on the line 3--3 of Figure 2; and

Figure 4 is a fragmentary side elevation of the parts shown in Figure 3.

Referring to the drawing, in which similar parts are designated with like numerals:

Numeral 5 designates a hoist of the usual construction used in connection with building operations. Extending from bottom 6 are chains 7 looped so that the loop portion 8 extends downwardly, the free ends 9 and 10 be- 1931. Serial No. 532,072.

ing secured to the bottom 6 of the hoist 5. A plurality of such loops are formed so as to extend across the entire bottom 6 of the hoist 5 and will be duplicated on as many sides as there are openings. up the chains 7 at frequent intervals are placed strips of colored material 12 so as to readily attract attention and be easily seen. As actually used, the chains 7 will be of suflioient length to extend several stories below the bottom of the cage when the cage is at its highest point. This of course, depends upon the height of the building and the chains 7 will belengthened or shortened in proportion to the height of the building and in accordance with the various stages of con struction. As the hoist is raised or lowered, the chains will strike together, sounding a warning, andindicating that the hoist is in operation. As the hoist is operated, the chains give visual notice of the movement of the hoist, this movement being emphasized by the strips'of colored material 12 positioned at various distances in the chain, as shown in Figure 2. Should a workmanfor any reason disregard these signals, and his extended body continue in the shaft,'he will be struck lightly by the descending chains withoutinjury and this is such a signal'as he cannot very well disregard- Upon the hoist reaching the lowest level the chains will coil in the pit below the hoist occupying the minimum space and without entanglement, and will readily a-line themselves upon the hoist being raised.

It is obvious that various materials may be used for the colored strips, and that warning means other than chains may be used without departing from the spirit of our invention and the scope of the claims appended hereto.

What we claim is: i I

1. In combination with an open framework, a hoist slidably mounted therein, elon- In the links 11 making 7 gated strips of material secured to the outer I edge of said hoist adjacent the open framework and extending downwardly from said gated strips of material secured to the outer edge of said hoist adjacent the open framework and extending downwardly from said hoist and adapted to give warning of the 5 movement of said hoist, indicia placed on said strips at spaced intervals.

3. In combination with an open framework, a hoist slidably mounted therein, elongated looped strips of material secured to the outer edge of said hoist adjacent the open framework and extending downwardly from said hoist and adapted to give warning of the movement of said hoist.

4. In combination with an open frame- 5 work, a hoist slidably mounted therein, elongated strips of metallic material secured to the outer edge of said hoist adjacent the open framework and extending downwardly from said hoist and adapted to give physical, audi- ,ble and visible warning of the movement of said hoist.

5. In combination with an open framework, a hoist slidably mounted therein, a plurality of elongated loops of metallic material extending from said hoist, the free end secured to the bottom of said hoist, indicia allocated on said loops spaced from each other and adapted to give physical warning of the. movement of said cage.

6. In combination with an open framework, a hoist slidably mounted therein, a plurality of looped chains extending from said hoist, the free end secured to the bottom of said hoist, indicia allocated on said loops spaced from each other and adapted to give physical warning of the movement of said hoist.

' 7. In combination with an open frame work, a hoist sliclably mounted therein, strips 40 of chain secured to the outer edge of said hoist adjacent the open framework and ex tending downwardly from said hoist and adapted to give physical, audible and visible warning of the movement of said hoist.

In testimony whereof we afiix our signatures.

HOWARDHAYES MoDANIEL. CHARLES HANSON M DANIEL. 

